package main

import "fmt"

func main() {
  var a map[string]int = map[string]int{
    "stu01": 1000,
    "stu02": 2000,
    "stu03": 3000, /*←最后一行需要写个逗号...emmm*/
  }

  fmt.Println(a) //map[stu01:1000 stu02:2000 stu03:3000]

  a["stu01"] = 88888
  a["stu04"] = 38333
  fmt.Println(a) //map[stu01:88888 stu02:2000 stu03:3000 stu04:38333]
}
